Barrier structure



FIG. 1 shows a rear perspective view of the first embodiment;

FIG. 2 shows a front perspective view thereof;

FIG. 3 shows a plan view thereof;

FIG. 4 shows a front view thereof;

FIG. 5 shows a side view thereof;

FIG. 6 shows a rear view thereof;

FIG. 7 shows a collapsed plan view of a second embodiment;

FIG. 8 shows a collapsed perspective view of the second embodiment;

FIG. 9 shows a collapsed end view of the second embodiment;

FIG. 10 shows a collapsed side view of the second embodiment;

FIG. 11 shows a rear perspective view of the second embodiment; and,

FIG. 12 shows a front perspective view of the second embodiment. 

The ornamental design for a barrier structure, as shown and described. 